SPST(single pole,single throw) normally open, Off-(On) momentary foot switch. Solder lugs, soft switching.
These high quality switches are great for upgrading the footswitch in relay based pedals as well as tap tempo applications.
Depressing the switch shorts the lugs together and when the switch is released it returns to it’s non connected state with no click.

SPST momentary switch

Soft, silent switching with no click

Normally open operation

Solder lugs

Nuts and washer included

Note: Off-(On) switches may sometimes be referred to as Off-None-(On).